The journey from Fort Washington to Denver spans approximately 1,500 miles. The most practical mode of transport is a direct flight from Washington Dulles (IAD) to Denver International Airport (DEN), which takes about 4 hours. Driving is a multi-day trip across the Midwest, typically taking 24 to 26 hours of pure driving time via I-70.
Total Distance: 2,600 km driving, 2,400 km air distance.
The airport is far from downtown; use the A-Line commuter train for $10.
June to August for hiking or December to March for skiing in the nearby Rockies.